LONDON, ENGLAND--Following in the footsteps of $#*! My Dad Says, another Twitter-user has turned a high-concept Twitter feed into a full blown script.

Warner Brothers Pictures has tapped JK Rowling, a 49-year-old single mom from Yate, United Kingdom, to write a feature film based on her popular Twitter feed, @jk_rowling.

Several years ago, Ms. Rowling began soliciting questions from readers about wizards, werewolves, and other magical creatures. Her following quickly grew, and the questions became more specific, obscure, and seemingly insignificant from a plot standpoint.

Warner Brothers took notice and signed her to a multi-million dollar deal. The studio has already revealed the name of the movie, Fantastic Beasts and Where to Find Them.

Ms. Rowling was by no means plucked from obscurity. She is best known for the book The Cuckoo's Calling, written under her pseudonym Robert Galbraith.

Warner Brothers is keeping the plot under wraps, but sources familiar with the pitch say it won't just be people asking questions about characters' middle names or sexual orientation: "There will be other things. Dialogue and whatnot."